Cotter key puller



June 30, 1931. c. H.'BUCKLE ET AL 1,812,682

COTTER KEY FULLER Filed July 11, 1929 0. H. pwm; GENT/1M.

alike 1mm Patented June 30, 1931 UNITED STATES PATENT OFFICE CARL H.BUCKLE AND GUS R. MCPI-IAIL, OF IVIAGNOLIA, TEXAS COTTER KEY PULLERApplication filed July 11,

This invention relates to a cotter key puller and aims to provide anovel, simple and highly efiicient device of this kind which may becarried in and actuated by one hand to effect engagement with and thewithdrawal of a cotter key.

Another object is to provide a puller of this character in which theparts are compactly arranged in order to permit the withdrawal of cotterkeys located in confined places and usually difficult of access.

Another object is toprovide a novel construction whereby improved leversfor eifective operation of the puller is attained and wherein the partsmay be readily disassembled for inspection, repair or the like.

Various additional objects and advantages will become apparent from aconsideration of the description following taken in connection withaccompanying drawings illustrating an operative embodiment.

In said drawings Figure 1 is a view in elevation of the invention,

Figure 2 is a side elevation of the same,

Figure 3 is a longitudinal sectional view taken on the line 3-3 ofFigure 1,

Figure 4 is a cross sectional view taken on the line 44 of Figure 1, andV Figure 5 is a cross sectional view taken on the line 55 of Figure 1.

Referring specifically to the drawings, the extractor comprises a tube10, from the inner end of which arms 11 rigidly extend. The forward endof the tube is notched as at 12. Slidably mounted within the tube is anextracting rod 13 provided with a hook 14 to coact with the end 12 ofthe tube. In order to provide for steady and eflicient operation of theextractor rod 18, the same has a central enlargement or guideconstruction 15, intimately fitting the bore of the tube 10.

Pivoted to the ends of the arms 11 as at 16, are handles or levers 17.These handles or levers 17 have links 18 pivoted thereto at 19 1929.Serial No. 377,492.

and which are pivotally connected by a bolt at 20 and which also connectthem to the inner end of the extractor rod 13. A latch 21 is provided onthe extractor rod 13 and a lug 22 is formed on the tube 10. Acontractile 550 spring 23 is attached to the lugs 20 and 22, serving tonormally hold the parts in and restore them to the position shown inFigure 1.

In using the invention, both elements 17 are gripped in one hand and thehook 14 is engaged with the cotter key or object to be extracted,whereupon the arms 17 are pressed together at their free ends, resultingin relative movement of the hook 14 and end 12 whereby the cotter key isgripped and may be pulled, since the links 18 tend to move rearwardly atthe center and the extractor 13 to correspondingly be moved therebyagainst the tension of the spring 23, such spring 23 55 restoring theparts to the position in Figure 1 after an operation. 7

Various changes may be resorted to provided they fall within the spiritand scope of the invention.

We claim as our invention 1. An extractor of the class describedcomprising a tube, levers pivoted to the tube, an extractor memberslidable in the tube and jointly with the tube adapted to directlyengage a cotter, links pivoted to the levers and to said member, thepivotal connection with said member being normally rearwardly of a linepassing through their pivotal connections with the handles, saidextractor having a hook at the forward end, an enlargement on theextractor withinthe bore of the tube, and a contractile springconnecting the tube and said extractor.

2. A tool olthe class described having a tube, arms extending laterallytherefrom, an extractor hook slidably mounted in the tube, said tube andextractor hook being jointly and directly engageable with a cotter, saidhook having an enlargement engaging thew bore thereof, a contractilespring connected to the extractor member and to the tube, leverspivotally connected to the ends of said arms, said levers extendingrearwardly, links pivoted to the levers, said links being pivotedtogether rearwardly of their connection to the levers.

In testimony whereof We aflix our signatures.

CARL H. BUCKLE. GUS R. MoPHAIL.

